|
OREGON
/ Portland
Latitude (N): 45.60
Longitude
(W): 122.60
Elevation (feet): 39
Annual Precipitation (inches): 37
Annual heating degree days (base 65 deg. F): 4,690
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
44 deg.
|
68 deg.
|
44 deg.
|
20 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
3.0 |
5.9 |
4.1 |
1.0 |
|
BTU/ft2
|
952 |
1,871 |
1,301 |
317 |
| On
vertical surface |
|
kWh/m2
|
2.8 |
2.7 |
3.7 |
1.5 |
|
BTU/ft2
|
888 |
856 |
1,174 |
476 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
39 |
53 |
52 |
35 |
| Daily
Max. - Degrees F |
56 |
74 |
75 |
46 |
| Wind
Speed - miles/hour |
8.5 |
7.6 |
6.9 |
9.4 |
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